Quartz overgrowths on sandstone grains after clay Nanushuk Group. Framework quartz grain with vacuoles by diagenetic clay. Central North Slope, Alaska.
Summary
Quartz overgrowths on sandstone grains after clay Nanushuk Group. Framework quartz grain with vacuoles by diagenetic clay. Clear areas of quartz-overgrowth (Q) are probably initiated where clay rim is absent, porosity (P) may be created by leaching of siliceous no clay development is taking place in the secondary Sample 78ACh325 Kurupa anticline; magnifications 6.3 photomicrograph. Central North Slope, Alaska. Published as Figure 47B in U.S. Geological Survey, 1614. 1985.
Summary
Quartz overgrowths on sandstone grains after clay Nanushuk Group. Framework quartz grain with vacuoles by diagenetic clay. Clear areas of quartz-overgrowth (Q) are probably initiated where clay rim is absent, porosity (P) may be created by leaching of siliceous no clay development is taking place in the secondary Sample 78ACh325 Kurupa anticline; magnifications 6.3 photomicrograph. Central North Slope, Alaska. Published as Figure 47B in U.S. Geological Survey, 1614. 1985.
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